I was thinking of a ski > 100 at the waist Gotama, Line Prophet, or maybe Watea...but I would consider anything !
Where do you ski? What's your ability level? Why >100? You say you stay mostly on piste. Aren't 88s going to be ok for the little time you go off piste? Do you like carving when you're on piste? If yes go skinnier not wider.
For Utah and Colorado you may be on the right track to go for wider skis for the deep powder days. How often do you yourself get to ski the really deep days? I would think that your 88s would be good for up to a foot at least. If you get days in the really deep stuff your original list is a good place to start. I have older Watea 101s and they're great in the deep.